Stuffing-box of crank-shaft bearings and the like.



l.. WYGDSK'Y. STUFFING B0X` 0F CHANK SHAF'T BEARINGS AND TH;` LIKE. iAPPLlcATmN FILED mAffar. 1916.

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.Mu/'anton M u f lli l; uhm um; la; l' u carnali' hackear.,

To ou fui/wm t may concern.'

Be it known that l, LEON WYoonskv, a subject or' the 'Czar ofvltussia,and a resident of city of Baltimore, Maryland, have 5 invented, certainnew and useful linnove` ments 1n Shilling-Boxes of Crank-fanart Bearingsand the like, of which the followingN 'is a specication.

l My invention relates to improvements in. l 10 the stulling boxes ofcrank shaft bearings of two cycle vinternal combustion engines 'andother engines and machines wherein there is a chamber,maintainedconstantly or at times under pressure greater than atmosipheric, and which is provided with apertures for the passage of a crankshaft or the like. y @ne of the most familiarexl amples cfa lcearin0rsuch as that with which my improved stulling box is to he used, is

- 2o the crank shalt bearing of a two-cycle en- 25 eratifn, and the fueleconomy of such enofincs aredependent in large measure upon lleepingthis crank shaft bearing tight, i. e., on preventing leakage around thecrank shaft. lt is Well known' that much didiculty to has beenexperienced in providing suitable packing for these hearings; for notonly must a leak-tight joint be produced, hut also the joint must besuch as to permit ready re Inoval of the crank shaft, andthe packing 85should be set up automatically. Moreover it is desirable that the spaceprovided tor the packing may be small in order that the overall length'of the engine may. not he too great.

My invention comprises a novel construction of the adjacent faces of thecrank case or other pressure-container and of the hearing bushing,whereby .a contracting space is provided for packing material; inimproved tu means for pressing the packin., into `this space; and otherfeatures all as ereinaftcr described and particularly pointed out in theappended claims.

The objecty et my invention ie to improve au vthe packing arrangementsin situations Such as ahove referred to l will` non' proceed 'todeecrihe my invention with referente to the accompanying l Specificationof Letters Patent.

.Application iled May 3l, 1916. Serial No. 100,770.

Patented npr.. Sill, lmao..

drawing-and will then point out the novel features in claims. ln thedrawing:

Figure l shows a central vertical section. ot a portion of the crankcase ot a tivo-eycle engine and ofthe crank shaft hearings tor such anengine, showing my improved packing arrzuigement.

Fig. 2 shoivs an elevation of the helically wound spring band employedfor forcing the packing against the crank shaft.

In the drawings l designates the lower or removable base member of thecrank case, and 2 the upper niei'nloer of the crank case. 3" designatesthe crank shaft, 4t the hearing' box therefor, and 5 the reinotable ofthe bearing box, and 6 designates the crank shaft journal. 7 designateslthe crank shaft bushing', usually termed in twoparts, as is the'comrnonpractice. Between the crank arm .8 of the-crank shaft, and the journalsurface .tif` of that crank shaft, the crank shaft 'is provided vce witha shoulder l0. In the vicinity of the bearing aperture in the crankcase; that crank case has an inwardly deflected portion ll; and the endof the bearing bushing' adjacent to the crank case is provided with abeveled portion 1.2,.the taper of which is somewhat greater than thetaper of the por* tion 1l of the crank case, so that the packing spacelocated between these tapering portions oil the crank case andbearing),` buslr ing respectively, contracts inward Aor toward theshoulder 10. ln this conti-actin@ space packing material 13 is placed,such material being coininonly wicking` saturated with. lard 0r oil, orsome other suitable packing material-I do not limit myself to the use ofany particularnpackin material, yand outside ofthis 'packing material ahelically Woundlg;

spring' handit is provided 'which band, loe. cause of its elasticity,tends! to force the 'packing material inagainst theJ shoulder 10.

By reason oil the pressure thus exerted upon the packing, and hy reasonof the inwardly tapering section ci? the packiin; space, the packing iskept at all time; tig;l itly in con tact with 'the `shoulder l0 andtightness of y the joint is insured automatically. For the saine reaeonthin packing provento luhricat ing oil trom. Working out 'trornrhetvveenthe eaatt journal the hearing; huahing.

l have shown the hearin Shoa ae pro Tllllli 4vided with van oil well 15,and with an oil ring 16, for supplying oil to the crank shaft journal;and I have also shown the shaft as provided with an oil catching ring 17at its outer end; but as these are fa-` miliar details of theconstruction I no not desdliibe them more particularly, nor do I clairhthemf. I mention them here, how# ever, because they constitute meanswhereby'the journal surface is kept flooded with oil, which oil mightescape and be thrown out centrifugally except for the action Aof thepackin material, which prcventssuch throwing o the oil.

In the construction herein illustrated and described the packingarrangements are of such nature that the bearings, or the crank shaft,or the upper portion of the crank case, as Well as the lower portion ofthe crank case, may be removed very readily. This is not the casein manytwo cycle engines, particularly those having gland packing boxes. In myengine, however, since the lower .portion 'lof the crank case isseparable from the upper portion 2 of the crank case, and since thebearing boxes 4 are integralwith the lower portion 1 of the crank case,it is easy, by removing the bearing caps 5, to drop the lower portion ofthe crank case, and, with it,'thebearing boxes "a and the lower membersof the bearing bushings 7. Similarly, the rup er of the engine may belifted o lower portion l of the crank case.

WhatI claim is:

l. The combination with a pressure chamber anda shaft projectingthroughan aperture thereof, said chamber having an in- .Wardly inclined surfacesurrounding. such shaft aperture, of a bearing member surrounding suchshaft outside such chamberi and having antinclined surface adjacent Vtheportion from the said inclined surface4 of the chamber, packing materialbetween 'the inclined surfaces ofsaid chamber and bearing'member, and

means for pressing the packing material inward against such shaft.

2 The combination with a pressure chamber and ashaft projectingthroughan aperture thereof, said chamber having an inwardly inclined surfacesurrounding such `y-shaft aperture, of adbearing member surf roundingsuch shaft 'outsider such chamber" and having an inclined surfaceadjacent the Asaid, surfaces of the chamber and bearing said inclinedsurface of the chamber, thel lmember being inclined at different anglesv of such shaft aperture, of a bearing inember surrounding such shaftoutside such chamber and having an inclined surface adjacent the saidinclined surface of the chamber, packing material between the inclinedsurfaces of said chamber and bearing member, and means for pressing' thepacking material inward against such shafts.

4. In a two cycle engine, the combination with a crank-case compressionchamber and a shaft projecting through an aperture thereof, saidcrank-case having its external surfaces inwardly inclined in thevicinity of such shaft aperture, of a bearing member surrounding suchshaft outside such chamber and having an inclined surface adjacent thesaid inclined surface of the chamber, the said surfaces of the chamberand bearing member being inclined at different angles causing the spacebetween them to taper toward such shaft, packing Vmaterial in suchtapering space, and means for pressing the packing material inwardagainst such shaft.-

- 5. AIn a two cycle engine, the combination with acrank-case'compression chamber and a shaft projecting through anaperture thereof and having, external to such chamber,` a shoulder and ajournal beyond such shoulder, and of less dia-meter than such shoulder,said crank-case having its exterH4 ing witnesses.

LEON WYGODSKY. Witnesses H. M. ltAnLn, PAUL H. FRANKE.

